Re: Negative feedback?

I'm not familiar with Ceriatone but negative feedback, in general,
mixes part of the output signal, inverted, with the input signal. This
can stabilize the circuit's operating points (e.g. stabilize a certain
DC potential) and - perhaps most importantly - correct the non-
linearity of the amplifier. NFB also increases the amplifiers input
impedance (within the gain stage/stages wrapped in feedback loop) and
decreases its output impedance. The latter characteristic has an
effect on the amplifier's damping factor and frequency response when
driving a load that is not purely resistive. With more negative
feedback the amplifier is more "damped" and its frequency response is
flatter as oppose to weakly damped amplifiers where the frequency
response varies according to impedance of the loudspeaker and the gain
is therefore increased at speaker's resonant frequency and at higher
frequencies (both where impedance of the speaker is higher than
nominally).
.

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